( 
NATURAL SCIENCES OF PHILADELPHIA. 73 
ratis ; antennis flavis articulis tribus ultimis latitudine vix longioribus. Long, 
•07— -08. 
Fort Yuma, California. Resembles in color and sculpture D. grave, but 
is smaller and broader ; the two outer striae of the elytra are shorter and not 
so deep. 
Anobium Fabr. 
A. setiferum, oblongo-elongatum, fuscum sordide pubescens, et pilis 
longioribus parcis erectis vestitum, thorace rotundato convexo, medio elevato 
fere gibbo, antice late emarginato, granulis parvis nitidis obsito, elytris grosse 
seriatim punctatis, punctis hie inde subeonfusis, antennarum articulis 2-8 
aequalibus, latitudine baud brevioribus, discretis, 9 — 11 elongatis, singulis 
funiculo baud brevioribus. Long. '15. 
One specimen from San Diego, California. 
Ptilinus Geoflfroy. 
P. basalis, cylindricus, fuscus opacus, subsericeo-pubescens, thorace glo- 
boso punctulato, antice parce exasperato, spatio dorsali postico laevi nitido, 
elytris modice at haud profunde punctatis ; antennis pallioribus. Long. '15 
--•23. 
Several females found at San Diego, California. This species is of the same 
form as P. bi color ilie/s. (which is probably the female of P. ruficornis 
Say, ) but it differs in the feet being of the same color as the body, while the 
antennae are not very obviously paler ; the more distinct posterior smooth 
dorsal space of the thorax, and the stronger punctures of the elytra also serve 
to distinguish it. P. thoracic us (Tomicus thoracicus Randall) has the 
thorax more uniformly roughened and sparsely granulate, while the dorsal 
space is distinctly elevated, and the antennae are black. 
Apate Fabr. 
A. punctipennis, cylindrica, atra, capite opaco scabro, fronte transver- 
sim elevato, vertice nitido paulo concave, thorace opaco, quadrato-globoso, 
antice valde exasperato, in cornubus duobus ad apicem protenso, postice sen- 
sim granulato et punctate, elytris nitidis fortiter punctatis, punctis versus 
latera seriatis, stria suturali impressa, postice oblique declivibus, margine 
callisque utrinque oblongis duobus elevatis. Long. -46 — -53. 
Mexico, Sonora, Texas and California, The antennae are not longer than the 
head. 
SmoxYLON Redt. 
S. sericans, cylindricum nigro-piceum, thorace transversim subquadrato, 
convexo, antice rotundato et valde exasperato, dein sensim granulato et 
punctulato, elytris tenuiter sericeo-fulvo-pubescens, antice versus suturani 
seriatim modice punctatis, postice oblique declivibus, margine callisque duobus 
oblongis utrinque elevatis, superiore altiore ; antennis pedibusque obscure 
rufis. Long. -17 — '25. 
Ringgold Barracks, Texas, Mr. Haldeman. 
S. a s p e r u m , cylindricum, nigrum, thorace transversim subquadrato, con- 
vexo, antice rotundato et valde exasperato, dein sensim granulato et punctulato, 
elytris subtiliter fulvo-pubescentibus, antice versus suturam grosse subconflu- 
enter punctatis, postice oblique declivibus, margine callisque duobus utrinque 
elevatis, superiore valde prominulo, antennis rufis. Long. -25. 
Colorado Desert, at New River. This species is of the same size and form 
as the preceding, but differs by the much larger punctures of the elytra : the 
posterior declivity is more sudden, and the upper callus more prominent. The 
feet are black, with the anterior femora and coxae partly red. 
S. sextuberculatum, cylindricum, nigrum, thorace transversim sub- 
quadrato convexo, antice rotundato et valde asperate, dein sensim granulato 
1858.] 
